Navien UHA-744SG User Manual page 12

Call signaling from the Guard phone
■
After the appearance of
"GUARD" on the screen,
call signal is ringing on
the Videophone,
while Guardphone LED and
Talk LED ickers and home
call melody rings.
Intercommunication with Guard phone
■
To call the Guardphone,
Push "Guardphone" Button.
Appear the appearance of
"GUARD" on the screen,
Call signal is ringing on
the Videophone.
12
When the "Talk" Button
is pressed, the conversation
with the Guardphone starts.
When the calling for
Guardphone is received,
the conversation starts.
If you press the Talk
Button while talking with
the Guard phone or the time
limit of 1 minute is reached,
the conversation ends.
If you press the "Talk"
Button while talking
with the Guardphone
or talk duration reaches
to 1minute, the screen
goes blank and
the conversation ends.